Death Valley, CA – How hot was it?

Clicking on this image will show it larger in a new window.  This picture may have been Photoshopped and not be a true representation.

We blacked out the Fahrenheit reading of this temperature sign at the Death Valley Visitor Center.

  • Take a guess at what the Fahrenheit reading on this sign must have been.
  • How did you make that guess?
  • Use the Fahrenheit conversion formula to calculate the missing number.     (C° * 1.8) + 32 = F°

Monarch’s are flying south again

In mid-August and early September, the Monarch butterflies begin their annual migration south to more moderate climates to hibernate and overwinter.  It is an incredibly long migration and fascinating to observe.  But, the population data on the Monarchs has seriously changed. Students and conservation groups can help the butterflies to be more successful in their journey.

In this activity students read charts, do a little research, and make observations about the decline of Monarchs.

Viral Growth – Talk like a Pirate Day

Sunday, September 19th is "Talk like a Pirate Day".

Bring some humor and marketing understanding to your students with this activity about a silly holiday that has had viral growth.

What happens when you tell 5 people and then each of those people tell 5 more people?  ...

If you share this post with one of our Facebook, Twitter, Google Plus, or in any way, maybe we can make it go viral.

The activity: Talk-like-a-pirate-day.pdf

Steepness and fall hiking

Mount Washington, NH

Mount Washington, NH

Fall is a beautiful time of year for hiking. Many students will be walking in the woods and mountains to enjoy the colorful leaves and the cool weather outside.  Let them combine what they are doing with their families and friends with a little mathematics about percent grade change.  Why are there warnings about a 6% road grade change ahead?  Why does everyone talk about the vertical gain on a trail that is only 3 miles long?  Enjoy using slope and the Pythagorean Theorem in a new way.

Hurricanes, Typhoons, and Cyclones

'Tis the season!

Graphic from

Last week Hurricane Ida caused major damage to Louisiana and the Northeast.  This is the season for increased cyclonic activity around the globe.  How are hurricanes, typhoons, and cyclones related?

There is a measurement called the Accumulated Cyclone Energy (ACE).  How is it measured? Are storms becoming more intense?  Did you know there is a formula for measuring the strength of storms and storm seasons?  Let's see if this formula for measuring the intensity of storms makes any sense?

The activity: typhoons-hurricanes-cyclones2021.pdf

Labor Day 2021

What is this holiday about?  Are we celebrating the start of school?  New cars? The end of summer?

In this short activity, students learn about the intended meaning of Labor Day as they read about its origin. For the mathematical part, they look for patterns in the history of Labor Day dates. Students then use those observed patterns to predict future dates of the holiday.